Callister, W. D., & Rethwisch, D. G. (2007). Materials
science and engineering: an introduction, New York: Wiley.
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Glass fiber
Nature fiber
Nature fiber
Nature fiber
Plant fibres are a renewable raw material and their availability
is more or less unlimited. When natural reinforced plastics were
subjected, at the end of their life cycle, to a combustion process
or landfill, the released amount of CO2 of the fibres is neutral
with respect to the assimilated amount during there growth. The
abrasive nature of natural fibres is much lower compared to that of
glass-fibres, which leads to advantages with regard to technical,
material recycling or process of composite materials in general.
Natural fibre reinforced plastics by using biodegradable polymers
as matrix are the most environmental friendly materials which can
be composted at the end of their life cycle. Unfortunately, the
overall physical properties of those composites are far away from
glass-fibre reinforced thermoplastics. Further, a balance between
life performance and biodegradation has to be developed
Nature fiber
Nature fiber
Nature fiber
Cellulose
- Bn kt tinh - Mch thng
Nature fiber
Hemi-cellulose
- Mw nh - Mch nhnh
Lignin
- Cu trc phc tp - Khng kt tinh - C l rt thp
Nature fiber
Nature fiber
Physical treatment Corona treatment
Alkali treatment
Nature fiber
Chemical treatment
Weak boundary layers coupling agents eliminate weak boundary
layers, Deformable layers coupling agents produce a tough, flexible
layer, Restrained layers coupling agents develop a highly
crosslinked interphase region, with a modulus intermediate between
that of substrate and of the polymer, Wettability coupling agents
improve the wetting between polymer and substrate (critical surface
tension factor), Chemical bonding coupling agents form covalent
bonds with both materials, and Acidbase effect coupling agents
alter acidity of substrate surface.
Nature fiber
Chemical treatment
Impregnation of fibres Chemical coupling Acetylation of natural
fibres
